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Hydrogen cyanamide improves endodormancy release and blooming associated with endogenous hormones in "Summit' sweet cherry trees

文献类型： 外文期刊

作者： Wang, Lei 1 ; Zhang, Caixi 1 ; Huang, Jiancheng 2 ; Zhu, Lina 1 ; Yu, Xiuming 1 ; Li, Jiefa 1 ; Lou, Yusui 1 ; Xu, Wenpin 1 ;

作者机构： 1.Shanghai Jiao Tong Univ, Sch Agr & Biol, Shanghai 200240, Peoples R China

2.Qingdao Univ, Dept Biol, Qingdao 266071, Shandong, Peoples R China

3.Shanghai Acad Agr Sci, Shanghai 200240, Peoples R China

关键词： Abscisic acid;blooming;endodormancy release;gibberellins;hydrogen cyanamide;sweet cherry

期刊名称：NEW ZEALAND JOURNAL OF CROP AND HORTICULTURAL SCIENCE （ 影响因子：1.154； 五年影响因子：1.424 ）

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收录情况： SCI

摘要： A trial was conducted to verify the effect of hydrogen cyanamide (HC) application on endodormancy release and blooming of Summit' sweet cherry trees, as well as on endogenous gibberellic acids (GAs) and abscisic acid (ABA) levels which were identified and quantified by gas chromatography/mass spectrometry in branches with spurs. Results showed that HC efficiently hastened endodormancy release and budbreak, shortened blooming duration and improved fruit set. Furthermore, bioactive GAs play different roles in the process of endodormancy release and blooming. GA(3) was recognised as the highest isomer of bioactive GA and was closely related with endodormancy release improved by HC treatment as well as GA(4). GA(7) displayed a rapid increase when buds went into the burst stage and associated with promoted budburst and blooming by HC treatment. GA(1) showed irregular changes during this process. A higher GAs:ABA ratio was observed in HC-treated Summit' branches from endodormancy release until full bloom. However, a reciprocal pattern occurred thereafter due to senescence of the flowers.

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